WO2008044374A1 - Procédé pour détecter la mise hors fonction de thyristor - Google Patents

Procédé pour détecter la mise hors fonction de thyristor Download PDF

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Publication number
WO2008044374A1
WO2008044374A1 PCT/JP2007/062813 JP2007062813W WO2008044374A1 WO 2008044374 A1 WO2008044374 A1 WO 2008044374A1 JP 2007062813 W JP2007062813 W JP 2007062813W WO 2008044374 A1 WO2008044374 A1 WO 2008044374A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
thyristor
voltage
gate
thyristors
Prior art date
Application number
PCT/JP2007/062813
Other languages
English (en)
Japanese (ja)
Inventor
Tomoyuki Shimazu
Jouji Tsunemi
Original Assignee
Aikoh Epoch Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aikoh Epoch Corporation filed Critical Aikoh Epoch Corporation
Publication of WO2008044374A1 publication Critical patent/WO2008044374A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only

Definitions

  • the present invention relates to an electric circuit using a thyristor, and relates to a method for detecting a turn-off of a thyristor capable of instantaneously detecting a turn-off of the thyristor and changing the circuit.
  • a power-saving transformer (see Japanese Patent Laid-Open Publication No. Hei 8-191542) with an autonomous switching device for raising and lowering same pressure is connected to input terminals R and T in a single-phase three-wire or two-wire single-coil coil transformer Two or more sets of main coils Ll, L2, L5, and L6 are interphased in a single-phase inner iron core (9), and the core (2) is connected between the ends of the main coils L2 and L6 of each circuit.
  • a plurality of excitation coils L3, L7 and L4, L8 connected in series with each other in connection with 9) are connected by a plurality of combination connections, and the voltage value detected by the voltage sensor connected to the input terminal is connected.
  • a plurality of sets of thyristors (1, 2, 3, 4, 5, 6, 7, 8,) that are turned on and off are provided between the end portions and between the exciting coils. , 2, 3, 4, 5, 6, 7, 8).
  • Set a connection or cut, boost the output voltage to the input voltage in the uninterruptible has a structure in which the pressure was freely autonomously switching the circuit steps down.
  • a device in which a thyristor is incorporated for example, a device such as a power saving transformer, has a voltage sensor directly between the coil and the coil, etc., like the power saving transformer with the above-mentioned step-up / step-down autonomous switching device. It is connected to detect the voltage and change the circuit when the input voltage falls outside the set voltage range.
  • a time lag occurs when switching the circuit in which the thyristor is incorporated, and complicated control is necessary to ensure the switching.
  • Patent Document 1 JP-A-8 191542
  • the method for detecting the turn-off of the thyristor according to the present invention is such that when a voltage is detected between the gate power swords by connecting a voltage detection sensor between the gate swords of the thyristor.
  • the object is to provide a method for detecting the turn-off of a thyristor that can change the circuit reliably without turning on the thyristor of another circuit.
  • a method for detecting turn-off of a thyristor is a device that adjusts a supply voltage to a load that cuts off a transformer by using a thyristor and cuts off power supply to the load.
  • At least one control circuit is incorporated in the circuit 1 and circuit 2 connected to B, and at least one voltage detector 101, 201, 301, 401 is connected between the gate swords of each thyristor.
  • the power to the load 60 of the transformer 50 depends on whether the gate signals of the thyristors 10 and 20 of the circuit 1 are turned on or the gate signals of the thyristors 30 and 40 of the circuit 2 are turned on. Load power without interrupting supply
  • the gate signals of the thyristors 10 and 20 are turned OFF, and the voltage detectors 101 and 201
  • the control circuit detects and judges that the thyristor is turned off, and turns on the gate signals of the thyristors 30 and 40.
  • the method for detecting the turn-off of the thyristor according to the present invention includes:
  • FIG. 1 is a circuit diagram relating to a method for detecting turn-off of a thyristor according to the present invention.
  • the method for detecting the turn-off of the thyristor according to the present invention is a basic circuit as shown in FIG. 1, but it can also be applied to a complicated circuit such as an inverter device that supplies current from a DC power source.
  • the circuit shown in Fig. 1 consists of a circuit 1 with two thyristors 10 and 20 connected in antiparallel, and a circuit 2 with two other thyristors 30 and 40 connected in antiparallel.
  • the closed circuit is connected to A and tap B, and further includes a control circuit 70 and a voltage supply source 80 connected thereto.
  • Transformer 50 is a normal transformer, and has tap A and tap B, which are connected to circuit 1 and circuit 2 respectively, and a primary feeder and a secondary feeder connected to the load are installed inside. It has been done.
  • the control circuit 70 detects the voltage measured by the voltage detectors 101, 201, 301, and 401, and when the detected voltage is 0V, determines that the thyristor is turned off and automatically turns on another gate signal. Circuit. In order to detect the measurement data of voltage detector 101, 201, 301, 401, it is directly connected to the voltage detector.
  • the voltage detectors 101, 201, 301, 401 are connected to the gates G of the respective thyristors 10, 20, 30, 40 and force swords K.
  • the voltage detector measures the voltage between the gates of the thyristor.
  • voltage detectors are connected to the gates and contacts of all thyristors.
  • One voltage detector may be connected to at least one of the thyristors, but preferably all thyristors are connected. It is desirable to connect a voltage detector.
  • the thyristors 10 and 20 of the circuit 1 and the thyristors 30 and 40 of the circuit 2 are controlled on and off by the respective gate signals.
  • a gate signal 1 keeps a current flowing between the gate swords of the thyristor.
  • turn off circuit 1 and shut off the power to the transformer.
  • the power to turn off gate signal 1 and turn on gate signal 2 Even if thyristor 10 or 20 where current has been flowing until gate signal 1 is turned off The current continues to flow until the polarity of the voltage between the gate and anode of the thyristor is reversed. If circuit 2 is ⁇ N (gate signal 2 is ⁇ N) while this current continues to flow, the same power source is connected to taps A and B of transformer 50 at the same time, resulting in a short circuit and a large short circuit. A fault current flows.
  • the control circuit 70 detects the voltage between the gate swords of the thyristors 10 and 20 by the voltage detectors 101 and 201, and confirms that the thyristor is turned off when the voltage becomes 0V. By doing this, the gate signal 2 is turned ON at that moment, and switching can be performed with certainty.
  • control circuit 70 detects the voltage between the gate and power swords of thyristors 30 and 40 by the voltage detectors 301 and 401, and the voltage is 0V. Gate signal 1 is turned ON after detecting a certain thing (thyristor turn-off).
  • Each voltage detector is connected to the gate G of the thyristor and the contact force sword K.
  • a current flows in circuit 2. Due to the characteristics of the thyristor, even if the gate signal is turned OFF, current flows continuously in the thyristor. At this time, a voltage is generated between the gate G force sword K of the sirith through which current flows.
  • the voltage detector detects this voltage, and the voltage detectors 101, 201, 301, 401 detect the corresponding thyristors.
  • control circuit 70 first turns off gate signal 2.
  • the gate signal 1 is sent to the thyristors 10 and 20 of the circuit 1 so that the current flows through the thyristor of the circuit 1. .
  • Conventional power-saving transformers have a voltage detector connected directly to the circuit between the thyristor's gate and the sword. If the circuit is not switched after the operation, the thyristor will be damaged by the inrush current. In other words, when switching the circuit, it was necessary to set the time when the circuit was left and the current disappeared.
  • the conventional power-saving transformer has a voltage detector connected to the coil, so that the current flowing through the entire circuit is completely 0 V, not the current flowing through the thyristor. Otherwise, the circuit could not be switched.
  • the voltage detector since the voltage detector is installed so as to be connected to the gate and circuit of the thyristor, switching is possible when the gate voltage is 0 V, that is, it is detected that no current flows through the thyristor. Therefore, the circuit can be switched instantaneously without having to leave the circuit unattended.
  • the present invention is a method of connecting and controlling a voltage detector to the gate and circuit of a thyristor, and is configured to connect a voltage detector to the gate and circuit of a thyristor.
  • the same effect can be obtained by connecting a voltage detector to any of thyristors 10, 20, 30, and 40.
  • a simple circuit diagram is used in this embodiment, even if the circuit is complicated, it is possible to use the present invention by detecting the voltage between the gate and the sword of the thyristor.
  • FIG. 1 is a circuit diagram related to a method for detecting turn-off of a thyristor according to the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)
  • Power Conversion In General (AREA)

Abstract

L'objet de la présente invention est un procédé pour détecter la mise hors fonction d'un thyristor dans lequel un circuit peut être modifié en ne mettant pas en fonction le thyristor d'un autre circuit lorsqu'il y a une tension entre la cathode de porte, en connectant un détecteur de tension entre la cathode de porte du thyristor. Dans un circuit dans lequel un circuit où deux thyristors sont connectés en parallèle inverse et un circuit où deux autres thyristors sont connectés en parallèle inverse sont connectés, respectivement, avec un transformateur, et un détecteur de tension est connecté entre la cathode de porte de chaque thyristor, une tension de charge est régulée sans interrompre l'alimentation électrique de la charge du transformateur en allumant le signal de porte du thyristor dans un circuit quelconque, le signal de porte du thyristor est éteint lorsqu'un circuit est commuté d'un état allumé à un état éteint et un autre circuit est commuté d'un état éteint à un état allumé. Lorsque la tension de détection du détecteur de tension devient égale à 0V, un circuit de commande détecte/juge que le thyristor est éteint et allume le signal de porte d'un autre thyristor.
PCT/JP2007/062813 2006-10-13 2007-06-26 Procédé pour détecter la mise hors fonction de thyristor WO2008044374A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006279605A JP4129276B2 (ja) 2006-10-13 2006-10-13 サイリスタのターンオフを検出する方法
JP2006-279605 2006-10-13

Publications (1)

Publication Number Publication Date
WO2008044374A1 true WO2008044374A1 (fr) 2008-04-17

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JP (1) JP4129276B2 (fr)
WO (1) WO2008044374A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101442288A (zh) * 2008-09-02 2009-05-27 江苏西贝电子网络有限公司 智能供电器
US10075056B2 (en) 2014-03-19 2018-09-11 General Electric Company Modular embedded multi-level converter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102386628B1 (ko) * 2017-07-27 2022-04-15 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 교류 스위치 그리고 그것을 구비하는 무정전 전원 장치 및 순저 보상 장치
WO2022054131A1 (fr) * 2020-09-08 2022-03-17 東芝三菱電機産業システム株式会社 Dispositif d'alimentation électrique sans interruption
RU2761522C1 (ru) * 2021-05-18 2021-12-09 Акционерное общество высоковольтного оборудования "Электроаппарат" (АО ВО "Электроаппарат") Устройство управления напряжением трансформатора под нагрузкой

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10333757A (ja) * 1997-05-30 1998-12-18 Nec Corp 安定化電源回路
JP2001202555A (ja) * 2000-01-21 2001-07-27 Akira Kumagai 省エネルギー用自動販売機電源装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10333757A (ja) * 1997-05-30 1998-12-18 Nec Corp 安定化電源回路
JP2001202555A (ja) * 2000-01-21 2001-07-27 Akira Kumagai 省エネルギー用自動販売機電源装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101442288A (zh) * 2008-09-02 2009-05-27 江苏西贝电子网络有限公司 智能供电器
US10075056B2 (en) 2014-03-19 2018-09-11 General Electric Company Modular embedded multi-level converter

Also Published As

Publication number Publication date
JP4129276B2 (ja) 2008-08-06
JP2008099468A (ja) 2008-04-24

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